Meeting Report

"Information Theory and Combinatorics"
2nd INTAS Meeting
April 9-11, 1997 Essen, Germany.

The IEEE German chapter on Information Theory and the participants in the EU-INTAS project "Information Theory and Combinatorics" organized the 2nd INTAS meeting in the beautiful, quiet, southern area of Essen, Germany. The purpose of the project is to stimulate the cooperation between European and Armenian scientists. Within this INTAS project a special effort is made to support young researchers from Armenia are supported. The general idea of INTAS is to give financial support to groups of scientists from former Soviet countries, to allow them perform research in their own country. Within this INTAS project the cooperating group leaders are Gurgen Khachatrian (Armenia, Yerivan), Luisa Gargano (Salerno, Italy), Rudi Ahlswede (Bielefeld, Germany), Henk van Tilborg (Eindhoven, the Netherlands) and Han Vinck (Essen, Germany). The meeting started on Wednesday and ended Friday after lunch. It contained the following lectures in the area of coding, cryptography and general combinatorial problems in information theory.

A list of presented papers follows.

• Construction of Uniquely Decodable Codes for the Two-User Binary Adder Channel Rudolf Ahlswede and Vladimir B. Balakirski (Bielefeld)
• On the Constructions of Constant Weight Codes Fang-Wei Fu, A.J. Han Vinck and Shi-Yi Shen (Essen)
• Efficient Generation of Fair Dice with Few Biased Coins Luisa Gargano ( Salerno, Italy)
• Generalized Hamming Weights of q-ary Reed-Muller Codes Petra Heynen and Ruud Pellikaan (Eindhoven)
• Note on LUCAS Public-key Algorithms and Key Exchange for Broadcast Applications G. Khachatrian and M. Kuregian (Yerevan, Armenia)
• Isoperimetric Theorems in Binary Sequences of Finite Length Rudi Ahlswede and Ning Cai (Bielefeld)
• Key Distribution Patterns and Broadcast Encryption Trung van Tran and D.S. Stinson (Essen, Nebraska-Lincoln)
• On the Aaroni Problem for 2-subsets G. Kuregian (Yerevan, Armenia)
• K-Separated Codes S. Martirossian (Yerevan, Armenia)
• On Perfect 3- and 4-Shift N-Designs Ulrich Tamm (Bielefeld)
• Combinatorial Synchronization Codes Adriaan van Wijngaarden (Essen)
• On Fixfree Codes Bernhard Balkenhol, Rudi Ahlswede and Levon Khachatrian (Bielefeld)
• Timing Jitter in Digital Recording Ole Harmjanz (Essen)

  Proceedings can be obtained by sending an email to the meeting chairman Han Vinck (vinck@exp-math.uni-essen.de).